Modelling N mineralization from green manure and farmyard manure from a laboratory incubation study

2011 ◽  
Vol 222 (3) ◽  
pp. 719-726 ◽  
Author(s):  
M. Mohanty ◽  
K. Sammi Reddy ◽  
M.E. Probert ◽  
R.C. Dalal ◽  
A. Subba Rao ◽  
...  
Keyword(s):  
Green Manure ◽  
N Mineralization ◽  
Farmyard Manure ◽  
Laboratory Incubation ◽  
Incubation Study

Influence of sampling date and substrate on nitrogen mineralization: comparison of laboratory-incubation and buried-bag methods for two Massachusetts forest soils

1992 ◽  
Vol 22 (12) ◽  
pp. 1895-1900 ◽  
Author(s):  
Richard D. Boone
Keyword(s):  
Organic Matter ◽  
N Mineralization ◽  
Unit Area ◽  
Seasonal Pattern ◽  
Mineral Soil ◽  
Net N Mineralization ◽  
Laboratory Incubation ◽  
Mineralization Potential ◽  
Organic Horizons ◽  
N Mineralization Potential

Nitrogen (N) mineralization potential and net N mineralization insitu were measured monthly over 7 months for the forest floor horizons (Oi, Oe, Oa) and mineral soil (0–15 cm) of a pine stand and the mineral soil (0–15 cm) of a maple stand in Massachusetts, United States. In all cases, N mineralization potential per unit organic matter (anaerobic laboratory incubation) varied significantly by sampling month but was unrelated to the seasonal pattern for net N mineralization (buried-bag method). The organic horizons in the pine stand exhibited the most variable N mineralization potential, with the Oe horizon having more than a fourfold seasonal range. For the pine stand the Oe horizon also had the highest N mineralization potential (per unit organic matter) and the highest net N mineralization insitu (per unit area). In general, temporal and depth-wise variability should be considered when sites are assessed with respect to the pool of mineralizable N.

scholarly journals Distribution of nitrogen in wheat plant in its late growth stages with regard to organic fertilisation and mineral nitrogen rate

2011 ◽  
Vol 51 (No. 12) ◽  
pp. 553-561 ◽  
Author(s):  
B. Čeh-Brežnik ◽  
A. Tajnšek
Keyword(s):  
Green Manure ◽  
Farmyard Manure ◽  
Mineral Nitrogen ◽  
N Recovery ◽  
Growth Stages ◽  
Mineral N ◽  
N Content ◽  
Organic Fertilisation ◽  
N Rates ◽  
The Impact

In Central Slovenia within a long term static experiment IOSDV we investigated the impact of mineral nitrogen (N) fertilisation (0, 65, 130, 195 kg/ha) on the N content and the N amount in winter wheat (larger roots, stems, spikes and leaves) in EC 81/82 and EC 90/91, employing three systems of management: farmyard manure ploughing in before forecrop maize, straw ploughing in and green manure, no organic fertilisation. At EC 81/82 the N content in larger roots was around twice as high as the N content in stems and around twice as low as the N content in spikes and leaves. There was 80% of the whole N amount in plant located in the spikes and leaves (33–168 kg/ha) in EC 81/82 and 90% in EC 90/91. Calculated N recovery from mineral fertiliser was 68–87%; it increased with the increasing N rates in the system with farmyard manure ploughing in and in the system with no organic fertilisation, but not in the system with straw ploughing in and green manure. Between EC 81/82 and EC 90/91 wheat gained from 4 to 34 kg N/ha, but there were more important translocations of N inside the plants, which were higher at higher mineral N rates. There was a significant impact of management system on the N uptake at the highest mineral N rate.

scholarly journals Nitrogen Utilization in a Cereal-Legume Rotation Managed with Sustainable Agricultural Practices

Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 113 ◽  
Author(s):  
Mariangela Diacono ◽  
Paola Baldivieso-Freitas ◽  
Francisco Sans Serra
Keyword(s):  
Green Manure ◽  
Crop Production ◽  
Farmyard Manure ◽  
Agricultural Practices ◽  
Residual Effect ◽  
N Fertilization ◽  
Climatic Conditions ◽  
N Losses ◽  
Sustainable Agricultural Practices ◽  
N Use

Optimization of the nitrogen (N) inputs and minimization of nutrient losses strongly affect yields in crop rotations. The aim of this research was to evaluate the effect of agricultural practices on yield and N use in a 4-year cereal-legume rotation in organic farming and to identify the best combination of these practices. The following treatments were compared: conventional plough (P) vs. reduced chisel (RC) tillage; composted farmyard manure (F) vs. unfertilized control (NF); and green manure (GM) vs. no green manure (NoM). No significant differences were found for N use efficiency between P and RC in each crop. The results suggested that legumes in the tested rotation do not need supplemental N fertilization, particularly if combining GM and F. The use of composted farmyard manure should be considered in a long-term fertilization plan for cereals, to allow a higher efficiency in N use. The residual effect of fertilization over time, along with the site-specific pedo-climatic conditions, should also be considered. In both tested tillage approaches, soil N surplus was the highest in plots combining GM and F (i.e., more than 680 kg N ha−1 in combination with RC vs. about 140 kg N ha−1 for RC without fertilization), with a risk of N losses by leaching. The N deficit in NoM–NF both combined with P and RC would indicate that these treatment combinations are not sustainable for the utilized crops in the field experiment. Therefore, the combination of the tested practices should be carefully assessed to sustain soil fertility and crop production.

Efficiency of Mussoorie rock phosphate as a source of fertilizer phosphorus to guar (Cyamopsis tetragonaloba) and groundnut (Arachis hypogaea)

1976 ◽  
Vol 87 (3) ◽  
pp. 665-669 ◽  
Author(s):  
H. S. Hundal ◽  
G. S. Sekhon
Keyword(s):  
Arachis Hypogaea ◽  
Rock Phosphate ◽  
Field Experiments ◽  
Farmyard Manure ◽  
Available Phosphorus ◽  
Laboratory Incubation

SummaryIn two field experiments, Mussoorie rock phosphate with or without pyrite, farmyard manure or straw was compared with concentrated superphosphate when applied to guar and groundnut. The treatments included rates of 10, 20 and 30 kg P/ha and were located on a soil low in available phosphorus.Mussoorie rock phosphate was 44–52% as efficient as concentrated superphosphate. The incorporation of Amjhore pyrite, farmyard manure or straw in the soil with rock phosphate increased the effectiveness of Mussoorie rock phosphate.Extractability coefficient ratios obtained upon laboratory incubation of soil with concentrated superphosphate and rock phosphate correlated fairly well with the availability coefficient ratios obtained from measurements with plants in the field experiments.

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